CVE-2024-35690: MarketingFire Widget Options Data Exposure Vulnerability

Technical summary

The vulnerability stems from improper handling of sensitive data in MarketingFire Widget Options, classified as CWE-201 (Insertion of Sensitive Information Into Sent Data). The plugin fails to properly filter or redact sensitive information before transmitting it in network requests or API responses. An authenticated user can trigger requests that cause the application to return embedded sensitive data—such as API keys, configuration tokens, or other credentials—that should remain internal. The attack vector is network-based with low attack complexity, requiring only valid user privileges and no user interaction.

Business impact

Organizations using MarketingFire Widget Options to manage marketing campaigns or customer data face credential compromise risk. If an attacker gains or already possesses valid credentials (through phishing, insider threat, or compromised account), they can extract sensitive tokens or keys embedded in plugin responses. Exposed credentials could enable lateral movement, unauthorized API access, or escalation of privileges within integrated systems. Marketing teams may be unaware that their plugin handling contains sensitive data in transit, creating a false sense of security around data transmission.

Affected systems

MarketingFire Widget Options versions 4.0.1 and earlier are vulnerable. The affected version range listed as "n/a through 4.0.1" indicates the flaw may be present in all released versions up to and including 4.0.1. Organizations should verify their installed version and confirm whether they are running Widget Options or another component of MarketingFire, as this CVE is specific to the Widget Options module.

Exploitability

Exploitation requires valid authentication credentials and network access to the MarketingFire instance. An attacker cannot remotely trigger this vulnerability without a legitimate user account. However, once authenticated, no additional complexity or user interaction is needed—the sensitive data exposure occurs automatically when the attacker interacts with affected Widget Options features. The moderate CVSS score (6.5) reflects the authentication barrier balanced against high confidentiality impact.

Remediation

Upgrade MarketingFire Widget Options to a patched version released after 4.0.1. Verify the exact patched version number against the official MarketingFire security advisory. In the interim, restrict Widget Options access to trusted internal users only, review access logs for suspicious data retrieval patterns, and rotate any credentials or API keys that may have been exposed through the plugin. Consider implementing network segmentation to limit which systems can query Widget Options.

Patch guidance

Check the MarketingFire security advisory for the patched version number and release date. Apply the patch immediately to all instances of Widget Options, prioritizing production environments and systems handling sensitive customer data. Test the patch in a staging environment first to ensure compatibility with your marketing workflows and integrations. After patching, verify through the plugin settings that sensitive data fields are no longer exposed in transmitted responses.

Detection guidance

Monitor network traffic for unusual API requests to MarketingFire Widget Options from authenticated users, particularly those querying configuration or settings endpoints. Look for responses containing known sensitive data patterns (API keys, tokens, credentials). Review user access logs in MarketingFire for accounts accessing Widget Options outside normal business patterns. Implement Web Application Firewall (WAF) rules to flag responses containing potential secrets if your deployment permits deep inspection.

Why prioritize this

This vulnerability warrants prioritization because it enables credential theft from a trusted plugin, increasing risk of supply chain-style compromise within your marketing infrastructure. Unlike remote unauthenticated vulnerabilities, it targets the insider threat and compromised credential scenarios that are increasingly common. The moderate CVSS score should not lead to deprioritization—confidentiality breaches of embedded secrets often have cascading security consequences. Patch within 30 days, sooner if the affected instance processes customer data or integrates with critical systems.

Risk score, explained

The CVSS 3.1 score of 6.5 (MEDIUM) reflects a network-accessible flaw with low attack complexity but requiring valid authentication. The confidentiality impact is rated HIGH because sensitive data is directly exposed, yet integrity and availability are not affected. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) correctly captures that this is a data-leakage issue rather than a system compromise vector, justifying the MEDIUM severity classification despite the HIGH confidentiality impact.

Frequently asked questions